I was having Windows 8 and Ubuntu 12.10 (dual-boot) on my laptop. Recently I updated Windows 8 to 8.1. From then on when starting the system I cannot see the grub (directly boots into windows). I should get into setup to boot into Ubuntu which gives me this error
Error: unknown filesystem.
grub rescue>
After reading few forums I have found few solutions that let me do this
set prefix=(hd0,gpt7)/boot/grub
insmod normal
normal
this successfully lets me boot into Ubuntu.
But according to answer, later on typing these commands in terminal would let us get out of that problem from next time.
sudo update-grub (Run this in terminal after getting into Ubuntu)
sudo grub-install /dev/sda (Run this in terminal after getting into Ubuntu)
But its not in my case. I still face the same problem as previous. Please someone help me solving this issue.
fdisk -l? – GnP Feb 03 '14 at 22:02